Hi Anuj,
Certification is added advantage for any consultant working in SAP.
If you attempt for certification with SAP. your skill sets will be registered and you will get SAP USERID.
With that you can browse latest SAP Product releases and notes etc.... from SAP support portal.
There are two ways you can attempt for certification.
1) You need to go through from your current employeer.
2) You need to attend trainings from SAP.
Thanks,
Prabhanjan Reddy G